Abstract: Provided is an illumination apparatus which prevents variations in the distance between the light-receiving surface of a light guide plate and a light source. Also provided is a display device which incorporates the illumination apparatus. The light guide plate, which constitutes a backlight unit, receives light through a light-receiving surface with the light-receiving surface oriented toward the light being emitted. In the backlight unit, pillars extend to intersect the direction of emission from an LED and are thus brought into contact with a device-carrying board and the light guide plate, which are superposed one on the other, thereby securing the device-carrying board and the light guide plate.

Abstract: A panel light assembly for use with a support frame including at least first and second support frame members, the assembly comprising an assembly frame including at least a first assembly frame member and a second assembly frame member spaced apart on opposite sides of a frame space, the first assembly frame member forming a channel, a light source supported by the first assembly frame member within the channel, a light guide member including at least one edge, the light guide supported by the first and second assembly frame members within the frame space with at least a portion of the at least one edge located adjacent the light source, a fastener for fastening the assembly frame to the first and second support frame members.

Abstract: Disclosed is a light source module capable of realizing a slim structure and providing excellent luminous efficiency. The light source module includes a circuit board, a light emitting diode chip mounted on the circuit board by flip-chip bonding or surface mount technology (SMT), a wavelength conversion layer disposed on the light emitting diode chip, and a reflector covering an upper surface and at least one of side surfaces of the light emitting diode chip.

Abstract: A luminaire for use in lighting a large open space such as a parking lot or deck of a parking garage includes a plurality of optical waveguides disposed in side-by-side relationship and together defining a closed path and at least one LED associated with each optical waveguide and disposed at a first end of the associated optical waveguide.

Abstract: A light emitting device array includes a substrate including a first region and a second region that is inclined with respect to the first region, a first light emitting device package arranged on the first region, and a second light emitting device package that is arranged on the second region and is inclined with respect to the first light emitting device package at an inclination angle between 90° and 160°.

Abstract: An envelope of a point light source includes first to fourth surfaces. The first surface protrudes ahead of a light-emitting element and extends to a left side and a right side of the light-emitting element when viewed from the light-emitting element. The second surface is connected to the first surface on the left side and the right side of the light-emitting element and is in contact with the light-emitting element. The third surface is connected to an upper end of the first surface and an upper end of the second surface and forms a first depression that sinks from the first surface toward the second surface. The fourth surface is connected to a lower end of the first surface and a lower end of the second surface and forms a second depression that sinks from the first surface toward the second surface.

Abstract: A lighting assembly includes an edge-lit light guide and a light redirecting member. Light extracting elements at the light guide extract light from the light guide as intermediate light. Light redirecting elements at the light redirecting film are configured to redirect the intermediate light received from the light guide to illuminate a target surface in accordance with a defined illumination profile.

Abstract: A front bezel assembly is adapted to cover a display panel and a backlight module of a non-self-luminous display device. The backlight module includes an optical module. The front bezel assembly includes a front bezel. The front bezel assembly includes a front wall disposed in front of the display panel and formed with a bezel opening to expose the same, and a sidewall extending rearward from the front wall into the optical module. A backlight source is mounted to the sidewall such that light emitted from the backlight source irradiates toward the display panel through the optical module.

Abstract: Disclosed is a light emitting device module, which includes a circuit board having at least two cavities, a reflective layer formed on a surface of each cavity, and a light emitting device package disposed in each cavity. The light emitting device package includes a package body and a light emitting device disposed on the package body, the light emitting device being electrically connected to a first lead frame and a second lead frame.

Abstract: A uniform reflective light-guide for accompanying an edge light source to form a backlight module for an LCD display includes a light-guiding layer and a reflective layer. The light-guiding layer further defines a light-introducing surface and a light-exiting surface. The light-introducing surface is to allow lights emitted from the edge light source to enter the light-guiding layer. The light-exiting surface perpendicular to the light-introducing surface is to allow at least a portion of the lights to leave the light-guiding layer. The reflective layer is to reflect the incident lights back to the light-guiding layer. The reflective layer and the light-guiding layer are manufactured integrally into a unique piece by a co-extrusion process so as to avoid possible existence of an air spacing in between. A reflective surface is defined to interface the reflective layer and the light-guiding layer, and a three-dimensional micro-structure is constructed on the reflective surface.

Abstract: According to one aspect, a luminaire comprises a waveguide body including a central section and first and second separate side sections extending away from the central section along first and second opposed directions, respectively. The central section includes a coupling portion and the waveguide body has a length and includes a plurality of light extraction features that extract light out of the side sections. At least one LED is disposed adjacent the coupling portion and is operated by a power circuit to produce light that is directed into the waveguide body by the coupling portion. At least one structural member extends along the length of the waveguide body for supporting the waveguide body and encloses at least one of the power circuit and the at least one LED.

Abstract: A liquid crystal display device has brightness uniformity at its front and lateral sides. The liquid crystal display device includes a reflection sheet reflecting light; an optical plate including a substrate for guiding light, a height-varying portion formed on one surface of the substrate, not facing the reflection sheet, and a prism pattern formed on the height-varying portion; and a plurality of light sources arranged on one lateral surface of the optical plate in a first direction so as to correspond to a position of the height-varying portion having a height not greater than an average height from the one surface of the substrate to the height-varying portion. The prism pattern extends in a second direction substantially perpendicular to the first direction. The average height is in a range of about 0.1% to about 10% of the thickness of the substrate.

Abstract: Disclosed is an LED lighting device which is easily assembled and disassembled and has a stable assemblability without structural shaking. The LED lighting device is able to improve a heat radiating characteristic and optical efficiency. The LED lighting device comprises a light guide plate comprising a top surface; an upper case comprising a base disposed on the top surface of the light guide plate, and an edge extending from the base, wherein the base is thicker than the edge; a lower case comprising a body coupled to the edge of the upper case; a reflective sheet disposed between the top surface of the light guide plate and the base of the upper case; and a light source unit disposed between the light guide plate and the body of the lower case.

Abstract: The present disclosure relates to a light emitting device that can improve design of emitted light. A communication substrate is provided with an LED indicator which emits light. A light guiding plate has a concave surface portion which is a concave surface to cover the LED indicator, and receives the light from the LED indicator using the concave surface portion. A storage case stores the communication substrate and the light guiding plate in a state where a part of the light guiding plate is exposed. The light guiding plate allows the light from the LED indicator to penetrate to a part of the light guiding plate exposed from the storage case by diffusing the light received using the concave surface portion. For example, the present disclosure is applicable to the light emitting device that emits light using an LED or the like.

Abstract: A light guide plate includes a light mixing part and a visual part. The light mixing part includes a light mixing bottom surface, a light incident surface, and a top surface opposite to the light mixing bottom surface. The light incident surface is substantially perpendicular to the light mixing bottom surface and the top surface. The visual part is adjoined to the light mixing part and includes a visual bottom surface and a light emitting surface opposite to the visual bottom surface. The visual bottom surface and the light mixing bottom surface are substantially coplanar and are divided by an imaginary adjoining line. The top surface and the light emitting surface are substantially coplanar. The visual bottom surface has at least one non-dot area. The visual bottom surface forms a plurality of reflective dots except for the non-dot area.

Abstract: A backlight structure includes a light source module and a light guiding plate. The light source module includes a circuit board, a lighting unit arranged on the circuit board, and a hollow baffle plate surrounding the lighting unit. The circuit board defines a groove in a surface thereof, and a bottom end of the baffle plate is embedded in the groove. The lighting unit is located between the light guiding plate and the circuit board, and the light guiding plate is disposed on the baffle plate. A method for manufacturing the backlight structure is also provided.

Abstract: A light source assembly includes a first substrate, a plurality of first light source units mounted on the first substrate and spaced apart from each other by a first distance, a second substrate and a plurality of second light source units mounted on the second substrate and spaced apart from each other by a second distance, each of the second light source units being disposed between the first light source units adjacent to each other.

Abstract: A display apparatus and a backlight assembly are provided. The display apparatus includes a display panel; and a backlight unit disposed on a rear surface of the display panel and discharging light to the display panel, the backlight unit comprising white light emitting diodes (LEDs) and Quantum Dot (QD) LEDs.

Abstract: A backlight module includes a light guide plate with at least one light incident surface, and a light source structure arranged at a side of the light guide plate. The light source structure includes a reflection cover and at least one light emitting module. At least one positioning pin is arranged on the reflection cover. The at least one light emitting module is installed on the reflection cover and corresponding to the at least one light incident surface. The at least one light emitting module is fixed on the positioning pin in a rotatable manner, such that the at least one light emitting module can rotate around the positioning pin as an axis when the reflection cover is combined with the light guide plate, so as to allow the at least one light emitting module facing the at least one light incident surface.

Abstract: It is an object of present invention to improve wiring workability in a lighting device and to prevent the entry of dust or the like into the device. A backlight unit according to the present technology includes a chassis having hole portions, LEDs housed in the chassis as light sources, relaying and connecting part electrically connected to the LEDs from outside the chassis through the hole portion and relaying electric power supply to the LEDs, and a covering member covering a clearance between the hole portions and the relaying and connecting parts inserted therethrough.

Abstract: Disclosed is an optical valve or light valve for providing large area collimated illumination from localized light sources, and system and method thereof for 2D, 3D, and/or autostereoscopic displays. An optical valve may include a stepped structure, in which the steps include separated extraction features which may be optically hidden to light propagating in a first direction. Light propagating in a second direction may be refracted, diffracted, or reflected by the features to provide illumination beams exiting from the top surface of the optical valve. Such controlled illumination may provide for efficient, multi-user autostereoscopic displays as well as improved 2D display functionality.

Abstract: A backlight unit is provided. The backlight unit may include a light emitting device package, a light guide plate including a first region and a second region extending from the first region, with upper surfaces of the first and second regions being spaced apart so as to form a stepped surface. A recess may be formed in a lateral surface of the second region to receive the light emitting device package, and an optical sheet may be received on the upper surface of the second region of the light guide plate.

Abstract: Provided are: a light source that emits light; a light guide including: a curved portion including a light incident surface from which the light from the light source enters; and a linear portion including a light emission surface from which the light is emitted to an original, the linear portion coupled to the curved portion and extended in a main-scan direction, the curved portion reflecting the light entered from the light incident surface to the linear portion; and a frame that houses the light source, and the light guide, wherein the light guide includes an inclined portion inclined in a direction that increases an incident angle ? of the light, the inclined portion formed in a range of the linear portion where the light reflected by the curved portion enters.

Abstract: Disclosed is a light emitting element package having excellent heat radiation performance and high luminance, and a backlight unit including the same. The light emitting element package includes a package including a lead frame, a light emitting element provided on the lead frame, and a molded material combined with the lead frame and having an opening for emitting light generated by the light emitting element, and a reflection structure having an opening corresponding to the opening of the molded material, and contacting the molded material.

Abstract: A lighting panel and method of production thereof is described. The lighting panel comprises a transparent substrate (7), upon a first surface of which are mounted one or more light sources (1) is described. The lighting panel further comprises a guide layer (9) wherein the guide layer is arranged so as to encapsulate the one or more light sources upon the first surface. The one or more light sources comprise top emitting LEDs side mounted upon the first surface. In this way the described apparatus provides an optically efficient means for providing “warm white” backlighting of products that can be manufactured on a commercial scale while offering acceptable levels of reliability.

Abstract: Provided are devices and methods for providing front-of screen uniformity. Methods include estimating a filter function corresponding to the display and selecting multiple light emitters as a function of characteristics corresponding to light transmitted from the display as determined via the filter function. Devices are provided that include multiple light emitters including a first chromaticity difference corresponding to the multiple light emitters and a second chromaticity difference corresponding to the multiple light emitters and a filter function, wherein the second chromaticity difference is less than the first chromaticity difference.

Abstract: An edge lighting device, and a method of providing edge lighting, including providing a lighting device with at least one light emitting diode (LED) chip embedded therein, wherein the LED chip(s) generates light photons. A path of the light photons within the lighting device that are emitted by the LED chip(s) from a top surface of the LED chip(s), are redirected from a first edge of the lighting device back through the lighting device to a second edge of the lighting device opposite to the first edge. The first edge and the second edge of the lighting device are perpendicular to the top surface of the LED chip(s). The photons which were redirected from the first edge of the lighting device then follow a path through the second edge of the device and are then output from the edge lighting device at the second edge of the device.

Abstract: An electronic device is provided. The electronic device includes a light source, a light guide, a display unit and a frame. The light source provides a light beam. The light guide includes a light emitting surface and a light entering surface, wherein the light beam enters the light guide through the light entering surface, and is emitted from the light emitting surface. The display unit is corresponding to the light emitting surface, wherein the light beam is partially emitted from the light guide, passes through the display unit to display an image. The frame covers the display unit and the light guide, wherein the frame has a display portion and a transparent portion, the image is displayed in the display portion, and the light beam is partially emitted from the light guide toward the transparent portion and passes through the transparent portion.

Abstract: The objective of the present invention is to orient an LED emitting surface not toward an upper surface, but rather toward a portion of a light guide plate on which the light is incident by using the scattering pattern of the light guide plate, and then maintain the uniformity of the distribution of the light emitted from the light guide plate by means of a scattering pattern of the light guide plate, in order to increase light-emitting efficiency.

Abstract: The present invention is related to a technology of liquid crystal display, and specially to a fixture incorporated in a backlight module for the liquid crystal display. The fixture for backlight module comprises a backboard having a bottom board, a sidewall, and a bent portion. The sidewall has a first end and a second end, and the bottom board being interconnected with the first end. The bent portion is interconnected to the second end, and arranged on an outside of the sidewall, and creates an angle with respect to the sidewall. A plastic frame is defined with opening aligned and enveloped onto the bent portion so as to securely assemble the plastic frame to the backboard. The advanced and preferred interengagement between the backboard and the plastic frame can not only readily implement into the backlight module in which the light strip and backboard are made individually, but also can be fitted into the backlight module in which the backboar is integrally formed with driving circuit for light strip.

Abstract: A backlight device wherein LEDs which are arranged side by side at a first arrangement interval (P1) are provided to each LED unit. The LED units are mounted to a flexible board at a second arrangement interval. A light guide plate is disposed in such a manner that an end surface thereof is spaced from the LEDs by a distance (H). The light guide plate is disposed so as to satisfy the following relationship: first arrangement interval (P1)<distance (H)<second arrangement interval (P2). Specifically, the LEDs are arranged side by side in such a manner that the first arrangement interval (P1) is not less than 0.1 mm but not greater than 3 mm and the second arrangement interval (P2) is not less than 5 mm but not greater than 15 mm. The light guide plate is disposed in such a manner that the distance (H) is not less than 1 mm but not greater than 7 mm.

Abstract: A lighting module includes a first side light source; a second side light source; a first light guide plate disposed between the first side light source and the second side light source; a second light guide plate disposed between the first side light source and the second side light source and disposed below the first light guide plate; a reflective plate between the first light guide plate and the second light guide plate; a first case coupled to one side of the first light guide plate, coupled to one side of the second light guide plate, and receiving the first side light source; and a second case coupled to the other side of the first light guide plate, coupled to the other side of the second light guide plate, and receiving the second side light source.

Abstract: A surface light source includes a light source facing an end face of a lightguide plate, a rectangular-shaped frame surrounding an outer peripheral surface of the lightguide plate, and a reflecting sheet is disposed on a lower surface of the frame. The frame is formed such that an inside frame portion is made of a white resin and an outside frame portion is made of a black resin. The inside frame portion and the outside frame portion are integrally molded by a two-color molding method.

Abstract: An optical assembly includes a plurality of light sources emitting light in a first direction at a predetermined orientation angle, and a light guide panel having a light incident section and a light emitting section. The light incident section has a first surface to receive the light emitted from the light sources in the first direction and the light emitting section is to emit light received from the light incident section in a second direction. Also included is at least one cover having a first surface adjacent the light sources and a second surface adjacent at least one portion of the light emitting section.

Abstract: An LED panel light fixture and method for assembling the same includes (a) selecting a set of specifications of the LED panel light fixture, the set of specifications comprising a fixture/base specification comprising a form factor of the LED panel light fixture; and a top specification comprising a visual feature of a top in accordance with the top specification; (b) providing a knock-down kit having parts including the top in accordance with the top specification, a frame in accordance with the fixture/base specification, an optically transmissive panel assembly, a set of light emitting diodes (LEDs), and driving circuitry; and (c) assembling the LED panel light fixture using parts of the knock-down kit. An LED panel lighting fixture kit includes a top and a base. The base includes a mounting mechanism that is accessible before joining the top to the base, but not accessible after joining the top to the base.

Abstract: An edge-lit light fixture includes a first edge-lit light guide panel that has a first light guide. The edge-lit light fixture also includes a second edge-lit light guide panel that has a second light guide. The edge-lit light fixture further includes a center spine that has a protrusion. The first edge-lit light guide panel and the second edge-lit light guide panel are positioned on opposite sides of the protrusion. The protrusion separates a narrow edge of the first light guide from a narrow edge of the second light guide. A portion of the protrusion is positioned below the first light guide and the second light guide.

Abstract: The light fixture includes a frame, an optically transmissive panel assembly, a set of light emitting diodes (LEDs), and driving circuitry. The frame has a frame length measured along a length axis and a frame width measured along a width axis, wherein the frame length is greater than the frame width. The optically transmissive panel assembly receives light from the set of light emitting diodes (LEDs) and emits light from an emission area in a patterned luminous intensity, using patterning optics adjacent a light guide plate. The driving circuitry is disposed within the frame and is operatively coupled to the set of LEDs and to a power supply external to the light fixture. The driving circuitry may include a first circuitry segment disposed within a first edge channel of the frame, and a second circuitry segment disposed within a second edge channel of the frame.

Abstract: A light guide plate fixing structure and a backlight module using the same, comprising a first abutting wall formed at the side edge of the light guide plate, a second abutting wall formed on the backplane, and a constant-force spring arranged between the first abutting wall and the second abutting wall; the constant-force spring has a fixing end and a support end, the fixing end being fixed on the first abutting wall, the support end forming an elastic foot that abuts against the second abutting wall, with the light guide plate being fixed with the help of the elastic force produced by bounce of the constant-force spring after being pre-compressed: when the light guide plate is expanded, it can push the spring away and be released and expanded; when the light guide plate is contracted, rebound of the spring will make the spring move with the light guide plate.

Abstract: The present invention relates to a heat radiating printed circuit board (PCB) and a chassis assembly having the same, the heat-radiating PCB characterized by: a circuit pattern unit mounted with a light emitting diode; and one or more mounting units bent from the circuit pattern unit to be fixed at a chassis providing a lightguide path of a backlight unit, where one of the mounting units is mounted to the chassis via a thermal interface material to maximize the heat radiating characteristic of the PCB and to reduce the manufacturing cost.

Abstract: Disclosed are a light emitting device and a light unit including the same. The light emitting device includes a body having a cavity with an open upper portion, a protrusion protruding from an upper portion of the body, a plurality of lead electrodes in the cavity, and a light emitting diode provided in the cavity and electrically connected to the lead electrodes.

Abstract: In a surface light source device frame, an amount of light that leaks from an outer peripheral surface of the frame can be decreased while a decrease in luminance is suppressed in an emission surface. The frame includes a rectangular frame main body made of a black resin and an auxiliary member made of a white resin. In inner peripheral surfaces of both lateral sides of the frame main body, fitting portions are provided in an end portion on a side farther away from the light source in the frame main body in order to fit the leg portions. The auxiliary member is attached to the inner peripheral surface on the side farther away from the light source in the frame main body while the leg portions are fitted in the fitting portions.

Abstract: A lighting assembly includes a light guide having opposed major surfaces between which light propagates by total internal reflection and a light input edge. The light assembly also includes a light engine. The light engine has a heat conductive armature having a receptacle for a portion of the light guide that includes the light input edge and a light source retained by and thermally coupled to the armature. The armature functions as a heat sink for dissipating heat generated by the light source. The light guide is mechanically retained in the receptacle, and the light guide and the armature cooperate to align the light input edge with the light source for inputting light from the light source into the light guide through the light input edge.

Abstract: A light guide plate includes a light emitting surface, a bottom surface opposite to the light emitting surface, a first side surface, a second side surface, and a light incident surface. The first side surface and the second side surface connect the light emitting surface to the bottom surface. The light incident surface is connected to the light emitting surface, the bottom surface, the first side surface, and the second side surface. A plurality of V-shaped grooves is defined in the bottom surface. The V-shaped grooves form concentric arcs, sectional surfaces of the V-shaped grooves along radial directions of the concentric arcs are isosceles triangles, and a top angle of each of the isosceles triangles is equal to about 80 degrees.

Abstract: A lighting device 10 according to this invention includes a light guide plate 16, a reflection sheet 21, and a light source unit LU. The light guide plate 16 is a plate-like member and includes a light entrance surface 16c through which light enters and a light exit surface 16a through which the light in the light guide plate 16 from the light entrance surface 16c exits. The reflection sheet 21 is arranged such that a front surface 21a thereof is on a rear plate surface 16b of the light guide plate 16 and such that an end portion 211 of the reflection sheet 21 is located more to an outer side than the light entrance surface 16c. The light source unit LU includes a light source board 18, a plurality of light sources 17, and a connector 19A configured to relay an electric power supply to the light sources 17.

Abstract: The present invention relates to an edge-type lighting device using an LED light source which has high light-emitting efficiency regardless of thermal expansion of a light guide plate. An LED light source (3) is disposed on an edge of a light guide plate (2) so as to be movable in the normal line direction (±n) of the edge (2c) of the light guide plate. A slide member (7) is slidably disposed on the rear surface of the LED light source. A spring (8) is disposed in a frame member (4) on the rear surface of the slide member. Thus, the LED light source can always be pressed toward the edge of the light guide plate regardless of the thermal expansion of the light guide plate. Because the spring has a simple structure, the lighting device can be compact compared to the case where a coil spring is used.

Abstract: An input apparatus including a layered body is provided. The layered body includes an electrostatic capacity type touch sensor, a character and symbol printed film, on which characters or symbols are printed, and a surface light emitting layer configured to illuminate the character and symbol printed film. The character and symbol printed film is arranged on an upper surface side of the surface light emitting layer, the touch sensor is arranged on a lower surface side of the surface light emitting layer, and an input operation surface that is positioned at an uppermost surface is flat.

Abstract: The present disclosure provides a recessed luminaire and recessed luminaire frame. The recessed luminaire frame includes a curved inner surface design in which the entire inner surface receives light from the luminaire and thus can be seen. The disclosure further provides a hydrographic printing process in which various desired designs can be printed onto a base material of the frame.

Abstract: The present invention relates to a backlight module and a manufacturing method thereof. The backlight module comprises a thin film unit, a light guide unit, an insulation layer and at least a light source. The thin film unit is installed with a first circuit. The light guide unit is installed with a second circuit. The insulation layer is installed between the thin film unit and the light guide unit. The light source is electrically connected to the first circuit, and the light thereof projects into the light guide unit.

Abstract: The backlight unit includes a plurality of light source groups, each of which includes at least one light source, and a light guide plate to guide light irradiated from the plurality of light source groups, and the light guide plate includes first grooves disposed in a first direction, the plurality of light source groups being disposed within the first grooves, and at least one second groove disposed in a second direction differing from the first direction.

Abstract: A backlight for a color liquid crystal display apparatus includes a first light-guide plate; a first incidence part for receiving light of a first primary color in a first area on a first lateral surface of the first light-guide plate; a second incidence part for receiving light of a second primary color light in a second area on a second lateral surface that is opposite to the first lateral surface of the first light-guide plate; and a third incidence part for receiving light of a third primary color in a third area on a rear surface of the first light-guide plate. The number of superposition steps is thereby reduced, light-guide plates can easily be superposed onto an LCD panel with high accuracy, and a lightweight and inexpensive backlight for a color liquid crystal display apparatus can be obtained.